Rail-drill



(No Model.) 2 Sheets-Sheet 1.

M. W. SMITH.

RAIL DRILL.

Patented Ma WITNESSES: NVENTOR.

VBY Mg ATTORNEYS.

2 SheetsSheet 2.

(No Model.)

M. W. SMITH.

RAIL DRILL.

A. .E W OW 1 R R m HF! 1M WY It] M U H HM M b I J1 d 111 E Lb u n u m h A N 9 N1 w RN -s E. N W 3 7 N E .5 v vmmwfifi 1 a H H 3 8 ll 9 z ii WV k k M R w N mg Nrrn Starts Parlour @rrrca MERITT \V. SMITH, OF VVAVERLY, NEW YORK.

RAlL-DRILL.

SPECIFICATION forming part of Letters Patent No, 898,988, dated March 5, 1889.

Application filed October 23, 1888. Serial Nox 288,933. (No model.)

To all Lulu/m- [1- may concern.-

Be it known that T, Mnnrrr W. SMITH, of

which are placed tubes or sleeves a. At

their back ends these rods have nuts I), and

\Vaverly, in the county of 'lioga and State of 5 New York, have invented a new and Improved Rail-Drill, of which the following is a .j

full, clear, and exact description.

/My invention has for its object to provide asimple, inexpensive, and ellicient drillingf of which are bent upward, forward, down- The invention consists incertain novel feaj tures of construction and combinations of parts of the drilling-machine, all as herein- I after described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this spccificaat their forward parts they are preferably provided with a collar or shoulder, 5 and the front ends of the rods are upturned to provide hook-heads B, which are adapted to enter eyes or loops 0, formed at the inner rear ends of a pair of hooks, C C, the outer ends ward, and inward, so as to pass over the head of a. railway-rail, D, to be drilled and to bear upon the center of the web of the rail, or at the same horizontal plane at which the drill E works, at a point about central bet-ween the hooks. This bearin g of the outer ends of the hooks on the farther side of the rail-web relatively with the point of the drill holds the entire machine more steady while the drill is at work than would be possible did the hooks merely grasp the head of the rail.

The drill E has a tapered butt or back on d, which fits a correspondingly-shaped socket at the shouldered head or forward end of a drilltion, in which similar letters of reference indicate corresponding parts in all the figures. 1

Figure l is a front elevation of the drillingmachine, partly broken away. Fig. 2 is a vertical sectional elevation thereof on the line a: of Fig. 5, and partly broken away. Fig. 3 is an enlarged detail sectional elevation showing the connection of the rail-clamp hooks 1 tical shaft, 1, journaled in lower and upper bearing blocks or boxes, J K, bolted to the with the body or frame of the machine. Fig. 4 is a plan View of the drill in section on the line 3 y in Fig. 1, and partly broken away. Fig. 5 is a vertical sectional elevation taken on the line 2 2 in Fig. i, and Fig. 6 is a detail sectional View of the fulcrum-connections of the feed-lever with the machine-frame.

spindle, F, which is journaled in the frameplate a, and at its rear end is fitted hyaspline or feather, f, to the hub g of a bevel-pinion, G, said hub being journaled for rotation in the frame-plate a. The drill-spindle is thus free to move endwise in the pinion, but must rotate with it, as the pinion is turned by an intermeshing pinion, H, which is fast to a verrear frame-plate, a. The shaft I carries at 3 its upper end a bevel gcar-wheel, L, which meshes with a bevel-pinion, M, which is fixed The machine-frame A consists of a front 1 i may be rotated for operating the drill.

late, a a rear )lttG a, a to) cross-bar a connected to them and forming a handle by P which the machine may be conveniently plates to a, and are surrounded by tubes or sleeves 0;, against opposite ends of which the i frame-plates are tightly pressed and stayed I to the lower end of a lever, T, fulcrumed, prefby nuts a at the ends of the bolts.

Across the frame A and at the sides of the drill-spindle are held a pair of rods, 1) b, on

to the horizontal driving-shaft N, which is journaled in the frame and carries crank-handles O Oo11e at each end and by which it I have provided a simple and automatic feed device for the drilhwhich is made as follows: A feed-screw, P, which journaled at opposite ends in the shaft-bearing .l and frameplate a, respectively, is provided at its outer end with a ratchet-wheel, R, which is pinned or otherwise fixed to the screw, and is adapted for engagement by a pawl, S, which pivoted erably, by a composite pin or bolt, U, presently to be described, to the frame A. The

upper end of the lever is preferably forked at t to engage opposite sides of an annular groove, 0, made in the periphery of an eccentrically-set wheel or cam, V, which is fixed to the main driving-shaft X, and whereby as the shaft is rotated to operate the drill E the lever T will be oscillated to cause the pawl S to engage the feed-screw ratchet R, and thereby give a partial rotation to the screw for every revolution of the driving-shaft. The fulcrum U of the feed-lever T isauade of two screwstuds, u it, the former being passed through any one of a verti call y-ranging series of holes, a, made in the frame-platea, and receiving a nut, n inside of said plate. The head of the stud 'lL is bored and tapped to receive the inner threaded end of the stud '11 which is enlarged next its head to form a shouldered bearing, onto which the lever '1 is slipped at any one of a series of holes, 25, in the lever prior to screwing the stud a into the stud u. The head of the stud 'u is of proper length to hold the lever Ttruly vertical, or in proper relation to the cam V, and also to hold the pawl S in proper relation to the feed-screw ratchet R. (See Figs. 5 and 6 of the drawings.)

On the drill-spindle I? is hung an open-sided nut, \V, which is held against movement along the spindle by collars u: U'; or it may be otherwise hold. This nut may be readily swung upward to engage the feed-screw I or may be swung or thrown downward clear of the screw. A spring, prcferaly a spiral spring, X, is interposed between the frame A and the nut or one of its retaining-collars; or it may be any other suitable stop provided on the drill-spindle, and acts normally to throw or move the spindle backward the instant the nut is disengaged from the feed-screw.

The operation of the machine is as follows: \Ve will suppose the nut \V is disengaged from the feed-screw I. The drill-spindle will now be thrown backward by the spring X, and after the drill E is adjusted to the spindle the machine will be set onto the ties or other railsupport and the drill-point properly preseu ted to the rail, which will now be engaged by the clamp-hooks C, which are slipped by hand upon the hook ends 13 of the frame-bolts b. As the cranks O are turned in one direction, the nut \V will be automatically swung into engagement with the feed-screw, the nut beiug fitted with sufficient tightness upon the drill-spindle to assure this action, and the gearing will rotate the drill, and the lever T, pawl S, and ratchet R will simultaneously rotate the feed-screw and cause the nut \V to feed the spindle forward to carry the drill through the rail. Should a train approach quickly or quite unawarcs, the machine may be-almost instantly disengaged from the rail by reversing the motion of the cranks O by a partial turn, which motion will automatically throw the nut from the feed-screw P and allow the spring X to instantly throw back the spindle and drill, or the spindle only should the drill stick in the hole, as the tapering fit of the drill in the spindle will allow it to slip from the drill, and the rail-cl amp hooks C may then be lifted from the frame-hooks B and from the rail, leaving the entire machine free to be quickly lifted from the track in time to prevent collision of a train with it. It requires but a few seconds of time to entirely disengage the machine from the rail.

It will be noticed that the rate or speed of feed of the drill through the work may be regulated to a uiccty, or made faster or slower, as the metal of the rail or other circumstances may require, by shifting the feed-lever fulcrum-bolt IT into a different pair of holes, 2" a, in the lever and frame. A reamer may be used in the spindle 1 instead of a drill, and in substantially the same manner.

I am not limited to the use of a hook-and eye connection of the frame and rail-clamp hooks, consisting of hooks on the frame and eyes on the clamps, as the hooks may be on the clamps and the eyes on the frame, as will readily be understood.

Having thus fully described myinvention, I claim as new and desire to secure by Letters Patent- 1. In a drilling-machine, the combination,

with a frame, a rotating and endwise-movable spindle thereon, and gearing, substantially as specified, for rotating the spindle, of an open-sided or half nut hung to the spindle, a feed-screw held parallel with the spindle and which the nut is adapted to engage, a ratchet on the feed-screw, a cam on the driving-shaft, a lever fulcrumed to the frame and engaged by the cam to oscillate it, and a pawl on the lever engaging the feed-screw ratchet, substantially as herein set forth.

2. In a drilling-machine, the combination, with the frame, a rotatable and endwise-movable drill-spindle thereon, gearing, substantially as specified, for rotating the spindle, of a feed-screw, P, on the frame, an open-sided nut, XV, on the spindle adapted to engage the feed-screw, a ratchet, R, on the feed-screw, a cam, V, on the driving-shaft, a lever, T, fulcrumed on the frame and having a forked end engaging the cam, and a pawl on the lever e11- gaging the ratchet, substantially as herein set forth.

3. In a drilling-machine, the combination,

with the frame, a rotating and endwise-mov able spindle, and gearing, substantially as specified, for rotating the spindle, of an open sided nut hung to the spindle, and a feedscrew held parallel with the spindle, and which the nut is adapted to engage for feeding the spindle and drill, substantially as herein set forth. Y

l. In a drilling-machine, the combination,

IIO

with the frame, a rotating and endwise-movdisengaged from the feed-screw, substantially as herein set forth.

5. In a drilling-machine, the combination, with the frame, of shafts I N, g'earin II I, M thereon, a pinion, G, journaled to the frame and meshing with the pinion H, a spindle, F, splined at one end to the pinion G and journaled at its other end in the frame, a half-nut, V, hung to the spindle, but immovable endwise of it, a feed screw, P, on the frame, adapted to be engaged by the nut, and a spring, X, normally withdrawing the spindle or drill when the nut is disengaged from the feed-screw, substantially as herein set forth.

0. In a rail-drill, the combination, with the frame provided with a rotatable and endwiscmovable drill-spindle, of hooks adapted to clamp the rail to be drilled and having a quickly-detachable hook-and-eye connection with the frame, substantially as herein set forth.

MERITT W. SMITH.

lVitnesses:

HENRY L. Goonwm, C. SEnewIoK. 

